Book of Monsters Slot Review

The Book of Monsters Slot Game

It’s expected of you to think that since this slot revolves around monsters, it wields a spooky aura that would leave you crawling under the bed. However, Pragmatic Play had other plans, creating what looks like harmless otherworldly creatures similar to Play’n GO’s Reactoonz and Reactoonz 2.

The Book of Monsters happens inside a luminescent cave draped in blue light that becomes fiery when you enter the free spins. Here, the monsters occupy the 7x7 gameboard in the middle of the screen bordered by a stone frame.

The soft blue light emanates from a cauldron on the screen's right-hand side, while the ceremonial book floats above the ‘sacred’ stone. An upbeat soundtrack with hints of ghostly tunes affixes the mystery design.

Symbols and Payouts

The journey to the monsters’ underworld serves you with seven regular symbols, ranked as low or high-paying. And the game runs on a cluster-payout system, which isn’t uncommon in the iGaming world.

It presents the chance to win when a block of at least 5 identical symbols connects vertically or horizontally. Luckily, it’s something you can experience regardless of whether you’re playing on a mobile, tablet, or desktop device.

The low-paying symbols in the Book of Monsters are poker playing cards imprinted on rocks. They include the Jack of Diamonds, Queen of Clubs, King of Hearts, and Ace of Spades worth 0.2-100x, 0.25-125x, 0.3-150x, and 0.4-200x the stake for 5+ OAK, respectively.

Then, the high-ranking category has the Purple, Green, and Red Monsters. These are worth 0.5-250x, 1-500x, and 2-5,000x the bet for 5+ of the same, respectively.

The only special symbol in this game is the Bonus symbol. It pays 2-100x for 3 to 7 bonus symbols and can trigger the free spins feature. Also, 3x3 to 7x7 symbols dubbed Fat symbols can randomly hit during the base game.

Book of Monsters Slot Bonus Features

This game’s main attraction is the free spins. Further, the gameplay provides the ante bet and bonus buy options at an extra cost!

Free Spins

Strike 4-7 Bonus symbols to trigger 5-8 free spins, respectively. First, the Book of Monsters selects a random paying symbol to be the Fat symbol for the subsequent round.

But before the round begins, you can gamble separately to increase the Fat symbol’s value to the next higher one or increase the free spins for the subsequent round. Alternatively, collect the currently awarded free spins and Fat symbol to start the round anytime.

If you gamble for the Fat symbol or free spins and “The End” is displayed, you lose the gamble and the round ends. But if you’re lucky, you can win up to 8 free spins or the highest value symbol in the game as the Fat symbol.

The Book of Monsters free spins has a progressive feature. When the round begins, a 1x1 Fat symbol is always on the screen and randomly moves at every spin. All the instances of the symbol selected as Fat for this round that hit and aren’t overlapped by the said Fat symbol will accumulate into a meter.

When you collect 12, 16, 20, 24, 27, and 30 symbols, the Fat symbols level up to sizes 7x7, 6x6, 5x5, 4x4, 3x3, and 2x2, respectively. Every time the Fat symbol size increases, you randomly receive +1, +2, or +3 additional free spins.

Ante Bet & Bonus Buy

You can select the bet multiplier from 20x to 40x and activate the ante bet. When active, 3-7 Bonus symbols will trigger 4-8 free spins, respectively. As such, the chance to trigger the free spins naturally is boosted 7x-fold. But it freezes the buy bonus.

Meanwhile, Book of Monsters lets you instantly trigger the free spins from the base game for 100x the total bet.

How to Win at Book of Monsters Slot

The above segments have covered most aspects of the game; this section just reminds you about the essentials of winning.

The monsters’ world is packed into a 7x7 matrix, which operates on a cluster-paying system. To win, you must aim to connect 5 identical symbols in horizontal or vertical positions, anywhere on the grid. All wins are added to the total win when winning with multiple blocks.

The highest amount you can win in Book of Monsters is 5,000x the stake!

I’m sure you’re wondering who can gamble on this slot; anyone who can afford to risk between €0.20 and €480 per spin is good to go.

Use the “+” or “−” buttons to adjust the bets before pressing the Spin button to gamble the reels once. Alternatively, apply the Autoplay function to gamble several preselected auto-spins. Do you wish to play faster? Use the Turbo or Quickspin options.

Book of Monsters Slot RTP & Volatility

A high volatility experience awaits you in this monster’s world. However, it upholds an above-average RTP of 96.50% for all gameplay options.

The Final Verdict

I entered this slot anticipating another conventional ‘Book of’ slot with 5 reels and a special expanding symbol during the bonus. However, I have to give it to the Pragmatic Play team for taking me by surprise.

In an unprecedented twist of “you shouldn’t judge a book by its title,” Book of Monsters came dressed in a 7x7 skeleton, running on a cluster-paying engine. The only shocker was the lack of cascades, typical for cluster slots.

The base game didn’t yield any special features, except for its Fat symbols. These boosted your winning chances whenever the 3x3 to 7x7 symbols hit randomly. Yet again, it wasn’t a common sighting during the gameplay.

The main action happened in the free spins, where you can gamble to increase the free spins or get a high-valued Fat symbol. Moreover, the bonus itself is a progressive feature, which levels up Fat symbols, depending on the meter collections.

In summary, this video slot was full of enthralling action that should leave you yearning for prolonged gaming times. However, considering it’s a cluster-paying slot, its 5,000x bet win cap is average. Notwithstanding, it’s an original experience that should appeal to beginners and seasonal enthusiasts!